Cart totals
| Subtotal | $87,515.10 |
|---|---|
| Shipping | Shipping costs are calculated during checkout. |
| Tax | $0.00 |
| Total | $87,515.10 |
Benjamin Polan
A while ago I became interested in an intra oral scanner for my office especially for dental sleep medicine and TMJ appliances. I searched online for Medit and found cad ray. Laura from Cad-ray quickly responded and set up a zoom meeting so she could... read moreA while ago I became interested in an intra oral scanner for my office especially for dental sleep medicine and TMJ appliances. I searched online for Medit and found cad ray. Laura from Cad-ray quickly responded and set up a zoom meeting so she could demo the unit. Great job at helping me understand. She set up the financing and I got my unit. A few glitches with my internet speed and getting IT to help with my upload and download speeds and I was ready to go. Every time I had a question I texted Laura and almost like she was waiting for my call she responds. We it turned out my unit wasn't just right so she immediately responded we will replace you unit. Laura has been a joy to work with and the customer service given will only encourage me to do business with cad-ray again.
Benjamin Polan DMD, D,ABDSM read less - 8/27/2021
Medit i700
Micah BickelGreat products, training and support - 11/01/2021
JamalI recently made a purchase from Cad-Ray and the experience was truly outstanding. From my initial enquiry, Nick was incredibly supportive and knowledgeable, answering all of my questions thoroughly and guiding me to the product that would best meet m... read moreI recently made a purchase from Cad-Ray and the experience was truly outstanding. From my initial enquiry, Nick was incredibly supportive and knowledgeable, answering all of my questions thoroughly and guiding me to the product that would best meet my needs. What really set this experience apart was his non-pushy approach. Nick showed genuine interest in understanding my specific requirements, ensuring that I would be fully satisfied with my choice. This type of customer service is rare and it made the whole process much more enjoyable. I can confidently recommend Cad-Ray to others not just for their high-quality products, but for their exceptional customer service. A big thank you to Nick and the entire Cad-Ray team for their professionalism and dedication. read less - 5/17/2023
Lauren SchulteFrank and the CAD-Ray team are fantastic! They go above and beyond to help their doctors be successful. The CAD-Ray team doesn't just sell you a product and leave you high and dry. Frank is always ready to answer questions and offer support when need... read moreFrank and the CAD-Ray team are fantastic! They go above and beyond to help their doctors be successful. The CAD-Ray team doesn't just sell you a product and leave you high and dry. Frank is always ready to answer questions and offer support when needed. I highly recommend! read less - 1/24/2023Mary Oliverie
Last year when I started looking into the Medit i500 I had my front desk call 3 sellers to get preliminary information. She told me hands down call CAD-RAY and don’t bother with the others. Boy was she right! Frank got us going with all our hardware ... read moreLast year when I started looking into the Medit i500 I had my front desk call 3 sellers to get preliminary information. She told me hands down call CAD-RAY and don’t bother with the others. Boy was she right! Frank got us going with all our hardware needs and trained us until all our questions were answered. Then Jonathon and Armen jumped in at our 2 day live training in Baltimore. I still review my notes to implement all the great ideas. When I get myself in a jam time to time CAD-RAY responds immediately and fixes my problem. Best decision I have made in the practice in a long time - Thank you everyone at CAD-RAY! read less - 10/09/2019
Medit i500 Intra-Oral Scanner
Mehryar EbrahimiGreat costumer service. I needed a part for my i700 and they were able to ship overnight. No down time. - 5/06/2022Daniel Hwang
Fantastic scanner and best company to buy from. They make sure you are happy with your product. Armen, Frank, and team are the best. High recommendations for CADRAY and the i500. - 7/18/2020Medit i500 Intra-Oral ScannerKristian Dietz
My wife and I practice together and bought our first i500 in August of 2018. This was very early on before Armen had a vast number of technique and online support articles in his blog! Little was publicly known at the time about this new scanner bu... read moreMy wife and I practice together and bought our first i500 in August of 2018. This was very early on before Armen had a vast number of technique and online support articles in his blog! Little was publicly known at the time about this new scanner but I felt confident in my purchase for a few reasons: 1) Armen had validated the product and was standing behind it... I knew of Armen from DentalTown and had many years of public posts to evaluate his character; 2) Limited demos available at the time; 3) some clinical accuracy data out of Europe that required zooming in on a powerpoint presentation that was recorded second-hand via camera phone ha! SO needless to say, I put a lot of eggs in the "Armen is standing behind this product" basket. We have NOT been disappointed. From personalized service from both Frank and Armen, to our vast success and joy using the product and deciding in late 2018 to buy a second Medit i500, I have nothing but good things to say about the product and Cad-Ray. What a bunch of self-less individuals. Armen has offered to remote in and I even took him up on the offer once and he remoted in immediately to take a look at something. Good luck getting service like this from ANYONE else in the industry. Cheers to digital dentistry with the RIGHT partner. Kristian C. Dietz, DDS read less - 3/08/2020Medit i500 Intra-Oral Scanner
Tara EricsonVery pleased with the EXCELLENT support we have received from Frank DeLuca! Loving our new Medit so far, definitely more user friendly than our previous one. - 6/02/2022
Michael ConteNeeded help with scanner updates and Frank is the man! Once he was done the scanner was operating in hyper-drive!!thanks frankoffice of Glenmont Dental - 2/15/2022
Brandon EricksonI have strong feelings about how great CAD-Ray has been. I purchased a medit i500 scanner from my lap, they wanted to use it for courses which aren't happening now so he didn't want to be sitting with this expensive piece of technology sitting aroun... read moreI have strong feelings about how great CAD-Ray has been. I purchased a medit i500 scanner from my lap, they wanted to use it for courses which aren't happening now so he didn't want to be sitting with this expensive piece of technology sitting around. Before purchasing he and I both talked to the Nobel sales rep who assured me that everything would transfer over just fine. I was concerned about the learning curve and wanted to be sure that I would have tech support. I asked the rep directly and he assured me again that everything would be great and he would come do an in-depth training with me. Long story short, the sales rep had no clue what he was doing and put very little effort in to helping me once the purchase was complete. I asked him over the phone how to do a few things and his response was to call CAD-Ray. They explained that this happens, they would love to help me but asked that I purchase the service package. That was a game changer. Now all of my questions getting answered, their response time is amazing and their understanding of the machine is by far better then the Nobel reps. The scanner is great but combine that with their tech support and I feel like I'm set up for success. If I were to do this again, I would skip the headache of trying to save a little bit of money and purchase it through CAD-Ray. But even with making the mistake, I feel like they have programs and support set up to point me in the right direction. read less - 10/15/2020Jeff Keh
I love my medit i-500. Cad-Ray has wonderful customer support, I can not imagine getting a scanner from anyone else. Armen and Frank are great! Thanks again. Will recommend cad-ray to all my friends. - 6/16/2020
Dong Lim
I’ve been using Medit for close to 2 years. It’s a must for any practice. No evil monthly subscription and great support from CAD ray - 6/16/2020
AMISH DESAIAwesome! Great support. If you are planning on getting a scanner, make sure you have Cad-Ray on your side ! - 4/20/2022John Pisacane
I purchased my Medit scanner after the ADA meeting in 2018. I did it primarily on the personal recommendation of Armen Mirzayan, the owner of Cad-Ray. I have known Armen for over 15 years (we both were CEREC trainers) and he has always been unbeli... read moreI purchased my Medit scanner after the ADA meeting in 2018. I did it primarily on the personal recommendation of Armen Mirzayan, the owner of Cad-Ray. I have known Armen for over 15 years (we both were CEREC trainers) and he has always been unbelievably knowledgeable about dental technology and was always moving on the cutting edge.
When you see Armen's daily FB posts, it’s obvious that he is constantly pushing the envelope and exploring the limits of the Medit and the processes we use to idealize our push towards completely digital dentistry. Medit owners are fortunate to have Armen finding glitches and pushing for improvements in our scanner.
As far as after sale service, I can’t find a flaw with Cad-Ray. You won’t find a more supportive and dentist-centered company. Armen and Frank do everything to make purchasers happy and back up their sales.
I’ve heard of horror stories when people shopped elsewhere and only positive comments about Cad-Ray.
In summary, buy your Medit and other high tech equipment from Cad-Ray, you will be totally satisfied.
. read less - 10/08/2019Medit i500 Intra-Oral ScannerYaqi Mu
I absolutely love using the Medit i500 Intra-oral scanner!!! The i500 scanner is small and easy to use on all patients. It is fast and gives a very clear image. I also think its very cool that you can change the music setting to whatever song you m... read moreI absolutely love using the Medit i500 Intra-oral scanner!!! The i500 scanner is small and easy to use on all patients. It is fast and gives a very clear image. I also think its very cool that you can change the music setting to whatever song you may like! I have used a few different scanners since i have been a dental assistant and have had several complications as far as: how long the scanner would take to load the image, The scanner not catching the image and even the system constantly kicking me out. With the i500 intra-oral scanner i have the BEST experience. I am happy and my patients are happier! I recommend the Medit i500 Intra-oral scanner to anyone who has never used it before! You wont be disappointed! 5 Stars for sure!!!!
- Samantha Brown @ Southern Oak Dental in Conway SC. read less - 6/17/2020Medit i500 Intra-Oral ScannerSuresh Goel
CAD-Ray is a great resource for all things digital. Knowledgeable team but also able to anticipate your needs and because they’ve done it so many times they seem to know what you need before you do! Definitely the first place to look for digital ha... read moreCAD-Ray is a great resource for all things digital. Knowledgeable team but also able to anticipate your needs and because they’ve done it so many times they seem to know what you need before you do! Definitely the first place to look for digital hardware and integration! read less - 6/16/2020
Scott TerrySix Stars! On a scale of one to five, I give CAD-Ray six stars. They really are that good. If you are purchasing an intra-oral scanner, I would recommend buying the Medit I-700. It is a dream machine. But, if you want incredible service every time, y... read moreSix Stars! On a scale of one to five, I give CAD-Ray six stars. They really are that good. If you are purchasing an intra-oral scanner, I would recommend buying the Medit I-700. It is a dream machine. But, if you want incredible service every time, you should buy your scanner from Cad-Ray. They have come through with flying colors each time I have contacted them. Their sales team great and their service is amazing. They have volumes of educational videos available, as well. I have worked with Jonathan, Damien, Frank, Armen and Laura. In a time where we are seeing the opposite, CAD-Ray will totally blow you away with the entire experience. I totally appreciate them and their value. read less - 11/01/2021
Spark DentalJust had a new i700 scanner.Service so far is great.Andy did our training, he was great in answering all our questions .loving the scanner so far .? - 9/01/2022
Daniel KimCAD-Ray's online resources and customer support has made my Medit scanner implementation possible without the need for any hands on training. They are full of resources and have expert knowledge. - 7/01/2021DERYCK PHAM
STOP SEARCHING NOW!
Best bang for your buck scanner on the market. we have been using out medit for 8 months now. love our crowns, margins are fantastic. almost no adjustments needed at all. maybe one in ten crowns might have to adjust mesial or... read moreSTOP SEARCHING NOW!
Best bang for your buck scanner on the market. we have been using out medit for 8 months now. love our crowns, margins are fantastic. almost no adjustments needed at all. maybe one in ten crowns might have to adjust mesial or distal to get crown to drop in. occlusion is always spot on. patients love the technology and WOW factor -"SOOO COOOLLL." customer service is great also! dont waste your money on anythign else. our lab even comments on how easy it is to deal with medit and how good the scans are. they recommend it to their other doctors now as well. read less - 10/09/2019Medit i500 Intra-Oral Scanner
Dr. Terry Zervos, DDS,PA.Today I had to order new tips and Laura was EXTREMELY helpful, Cad-Ray has all the products you need for digital dentistry and they do Education, if you buy Medit scanner from them they include 12 CE training course. Cant just buy a Lamborghini you h... read moreToday I had to order new tips and Laura was EXTREMELY helpful, Cad-Ray has all the products you need for digital dentistry and they do Education, if you buy Medit scanner from them they include 12 CE training course. Cant just buy a Lamborghini you have to learn how to drive it! read less - 7/02/2020
Ponciano MeloIf your planning to buy dental oral scanner look for Jon. He will give you a great deal. He is very friendly and knowledgeable about the advantage of Medit I500. AGAIN, Don't forget to look for Jon for your next oral scanner. I highly recommend this ... read moreIf your planning to buy dental oral scanner look for Jon. He will give you a great deal. He is very friendly and knowledgeable about the advantage of Medit I500. AGAIN, Don't forget to look for Jon for your next oral scanner. I highly recommend this guy. read less - 1/09/2021
Arlington Heights Orthodontics & Pediatric DentistryWe have been using the Medit i700 for about a year now. Frank and his customer service team has made it a smooth transition. He is always quick to reply and is friendly and professional! - 1/26/2023William Daily
Excellent support and price on our medit IOS! Bought a second one a year later. Can always count on Armen and Frank for help when we need it. - 6/16/2020
Chirag VaidI ordered my Medit scanner from them in Feb 2020, so far no issues with support or the product. They are a great company with great support. Disclosure: they did promise me a scanner tip for this review, but in all honestly I was meaning to give it t... read moreI ordered my Medit scanner from them in Feb 2020, so far no issues with support or the product. They are a great company with great support. Disclosure: they did promise me a scanner tip for this review, but in all honestly I was meaning to give it to them anyway.... if you are looking to buy, this is a great way to go about it. read less - 7/19/2020
Todd HaskinThe medit is one of the best scanners on the market with the best price. Cad ray's support and training is phenomenal and they are very quick to respond. We work with Laura. Highly recommend. - 12/16/2021Tim Mininger II
Great product and company. all the help and support you need on their website and Facebook group. recommended them to many of my colleagues and bragged to other reps about how good my deal was compared to what they were offering. - 6/16/2020
Levy DoI'm a repeat customer because Cad-Ray's customer service is fast, efficient, and no nonsense. The classes offered for training for particularly for the Medit is awesome and it comes included which is phenomenal. All the classes that I've gotten to at... read moreI'm a repeat customer because Cad-Ray's customer service is fast, efficient, and no nonsense. The classes offered for training for particularly for the Medit is awesome and it comes included which is phenomenal. All the classes that I've gotten to attend so far has been well organized and I left learning very practical things. Remote support team solves my problem right then and there. Recently I had an issue, and instead of me talking to a sales rep who doesn't know what to do, Kaila remoted in and got it fixed just like that. Thank you and great job guys! read less - 4/19/2022
Tiffany LeeThis is a unique place because it serves both dentists and patients. For patients, this is an imaging center only. There are no diagnostics done here. There is a dentist on staff, but he is only there for imaging purposes, no diagnosis. As a dentist,... read moreThis is a unique place because it serves both dentists and patients. For patients, this is an imaging center only. There are no diagnostics done here. There is a dentist on staff, but he is only there for imaging purposes, no diagnosis. As a dentist, I would say that to be fair a niche place like this couldn't be expected to bill insurances. They would have to hire an entire separate staff to deal with all the thousands of types of insurances you have. For dentists: This is a great service to your patients because if you do not own a 3d x ray machine, you don't have to invest the $200,000.00, you can refer your patients here and cad ray will send you the digital files. You can also send them files to have custom surgical guides made. The folks who work here go out of their way to explain how things work. If you don't have a doctor, they can refer you to a dentist who can diagnose your problems. I always call ahead to make an appointment. read less - 6/02/2018
lucas kimOrdered some scanner parts. Laura was super helpful and replied very quickly. Great customer service! - 6/02/2022
ycsongddsI have had zoom training with Andy today. I can honestly say that he was the best. He was patient and very throughal. I learned a lot I would ask him again when I need support again Thanks Rodger - 3/15/2023
Scott ChongThe i500 has been a game-changer for our orthodontic practice. Patients love not having to do alginate impressions. Records appointments and debands take much less time plus there's significantly less clean-up. And it's fast/easy enough to use tha... read moreThe i500 has been a game-changer for our orthodontic practice. Patients love not having to do alginate impressions. Records appointments and debands take much less time plus there's significantly less clean-up. And it's fast/easy enough to use that we've even been able to train summer interns to scans with zero prior dental experience. Our retainers, nightguards, and sleep apnea appliances all showed improved fit with less chair-side delivery time due to accuracy of the scans. Customer support is top-notch. Whenever we've had issues, we get someone immediately and they either talk us through a fix or login via screenshare to help us directly. They have a great loyalty program which gives significant discounts to upgrade to newer units. We recently took advantage and are excited to try out the new i700, especially since they're now Mac-compatible. Simple version: Great intra-oral scanner, easy to use/operate, intuitive software interface, fantastic support. read less - 8/16/2023
Cody BosemanCad-ray has been amazing, not to mention they have an amazing product in the medit i500. Their training is great, customer service is quick and thorough, and follow up is consistent. I highly recommend using cad-ray for anything that you may need. - 6/19/2020
Minh VanI was referred to CAD-Ray by Medit Instagram help service. I have purchased Medit i700 from Laura, I was please to work with her and the whole team. They offered the best customer service and the fast responses, especially Laura. I look forward for t... read moreI was referred to CAD-Ray by Medit Instagram help service. I have purchased Medit i700 from Laura, I was please to work with her and the whole team. They offered the best customer service and the fast responses, especially Laura. I look forward for the next purchase. read less - 12/07/2021
Wes BuchmanUsed CAD-Ray for my Medit scanner purchase, training, and assistance and have had zero problems. They are so quick to respond to inquiries and helping with any minor issues (which have been very minimal). Highly recommend working with this company - 8/27/2021
Jennifer GoodaleFantastic class. Amazing scanner.Cad Ray has been helpful not only with my purchase of the Medit i500, but every step of the way.Level 2 seminar with Armen and Damien was extremely informative, useful and practical! ⭐️⭐️⭐️⭐️⭐️ - 8/08/2021
Michael MartinsenHonestly the best service that I've received in dental tech support. I had originally purchased a scanner with another supplier and was underwhelmed with the support I received. I switched over to CAD-Ray for my second scanner and have never been let... read moreHonestly the best service that I've received in dental tech support. I had originally purchased a scanner with another supplier and was underwhelmed with the support I received. I switched over to CAD-Ray for my second scanner and have never been let down. They are prompt and exceptionally knowledgeable about the products they support. Thank you CAD-Ray for keeping my practice moving smoothly! read less - 8/27/2021
Alec KeonI was on the fence on getting a scanner for years and finally pulled the trigger. CAD-Ray's support and knowledge has made this one of the best investments in my practice to date. When I spoke with Damien on the phone about my options he literally sa... read moreI was on the fence on getting a scanner for years and finally pulled the trigger. CAD-Ray's support and knowledge has made this one of the best investments in my practice to date. When I spoke with Damien on the phone about my options he literally saved me thousands after figuring out what my exact needs were. I went with the Medit i600, MSI laptop and 3D dental systems cart. The final product looks and feels as premium as it gets. read less - 2/21/2024Eric Bailey
Couldn't be happier with the support I've gotten from these guys. Trouble-shooting a problem real time so you can call a patient and get them right back in with a solution is extremely hard customer service to match. Thanks a ton and no question wher... read moreCouldn't be happier with the support I've gotten from these guys. Trouble-shooting a problem real time so you can call a patient and get them right back in with a solution is extremely hard customer service to match. Thanks a ton and no question where I'll be going for any more purchases! read less - 10/06/2021Medit i700Michael Gagaoudakis
Awesome company. The video collection CAD-Ray has put together for their equipment is unparalleled. There is literally no other company that has a library of learning tools like Armen and his team have put together. I highly recommend this company if... read moreAwesome company. The video collection CAD-Ray has put together for their equipment is unparalleled. There is literally no other company that has a library of learning tools like Armen and his team have put together. I highly recommend this company if you are considering making a digital equipment investment. 5 stars! read less - 6/16/2020
Archstone Weatherford
Medit i700 intraoral scanner is the first scanner that I actually used on my patients. Before I put my hands on it, I had some prejudices against all scanners. They were bulky, laggy in capturing the images, etc. When I finally had the chance to use ... read moreMedit i700 intraoral scanner is the first scanner that I actually used on my patients. Before I put my hands on it, I had some prejudices against all scanners. They were bulky, laggy in capturing the images, etc. When I finally had the chance to use an intraoral scanner and get introductory training with Laura from CAD-RAY a few weeks ago, I totally changed my view of this product. Very soon, I was able to scan crown, bridge, and even denture cases. Of course, I have had some knowledge about the digital scanner from CEs provided in the past, but being able to apply it in the daily practice in such a short time was beyond my expectations. I would highly recommend MEDIT i700 and training from CAD-RAY.
Big thanks to Laura!
-Lei Fu, D.D.S. read less - 9/12/2021Medit i700Ellen Huang
Armen created series of these very helpful videos. They helped us tremendously in breaking into the new scanner we purchased. No matter you just got into digital dentistry or you are quite experienced with different fields of data acquiring or treatm... read moreArmen created series of these very helpful videos. They helped us tremendously in breaking into the new scanner we purchased. No matter you just got into digital dentistry or you are quite experienced with different fields of data acquiring or treatment planning, you will find those being tremendous help. read less - 5/24/2020
CAD-Ray.com Membership
Yen TranJonathan and Nick have been a great tremendous help. They went out of their ways to help me upgrade my Medit i500 even though I didn’t purchase my Medit i500 scanner from them. They are the largest Medit scanner distributor and they have the custome... read moreJonathan and Nick have been a great tremendous help. They went out of their ways to help me upgrade my Medit i500 even though I didn’t purchase my Medit i500 scanner from them. They are the largest Medit scanner distributor and they have the customers’ interest at heart. They are super responsive to phone calls, emails, and Facebook messages. I highly recommend their services read less - 9/01/2021
Lora WonderlyThank you Frank DeLuca for being so accessible and making everything right again! Customer service is above and beyond. We also love our Medit Scanner - we would be lost without it! - 1/25/2023Chase Funk
This has been awesome, to be honest I have know idea how to use it but our team members have picked it up so easy!! - 6/16/2020
Sonrisas DentalSupport was our main concern, and we chose very carefully. Frank is 100% every step of the way - 1/25/2023
Robert CrosbyThe i700 is the second scanner I have purchased. It is hands down far superior in terms of quality and ease of use than my first scanner (3M Tru Def). I was hesitant to enter the market again but wanted to mainly for implant reasons. After talking... read moreThe i700 is the second scanner I have purchased. It is hands down far superior in terms of quality and ease of use than my first scanner (3M Tru Def). I was hesitant to enter the market again but wanted to mainly for implant reasons. After talking with Laura and watching her presentation with my staff, we were sold! The i700 was extremely reasonable in price while being similar to units costing twice as much. CAD-Ray made this possible. I found their on line training to be adequate in learning the necessary skills to start scanning, I continue to watch these videos as I sharpen my skills. Initially I was concerned about the on line training. But now I actually prefer this way of training as it is self paced and you always have the library of videos to watch when needed. Laura has been there to answer questions and help me whenever needed and I’m talking on nights and weekends too! I admit I was was extremely hesitant to get another scanner, especially with an online outfit; but I have no regrets and highly recommend CAD-Ray and Laura for anyone needing a scanner! They provide excellent services. read less - 4/23/2022
Shant AharonianCad-ray has to be the best company to work with when it comes to digital dentistry solutions. Here are the reasons why: 1. Experience. Everyone in the company has extensive experience in dentistry. They have used all digital platforms and offer custo... read moreCad-ray has to be the best company to work with when it comes to digital dentistry solutions. Here are the reasons why: 1. Experience. Everyone in the company has extensive experience in dentistry. They have used all digital platforms and offer customers first hand experience. 2. Honesty. Based on their experience they share all the good/bad of different systems. They work with you to find a solution that works best for you. Not sell you the piece of the equipment that gives them the biggest commission. 3. Support. Cad-ray offers the missing piece of the dentist/digital manufacturer puzzle. Many other distributors sell you a piece of equipment but don’t have true day-to-day experience with that equipment. Cad-ray’s team openly share their expertise to help customers optimize their workflows with great technology. 4. Passionate. The Cad-ray team is extremely passionate about their craft. They truly believe in what they have to offer. I took Armen Mirzayan’s course on intraoral scanning and it was truly mind blowing. Armen’s insights will help any dentist optimize their craft. I purchased the full sprintray 3d printing ecosystem the help of Frank. I plan to purchase more equipment from cad-ray. Also, Jesse is a genius in regards to all aspect of digital workflows. I’m truly grateful for this company and everyone who I’ve worked with so far. read less - 10/07/2022
Dan MalloyExtremely good customer service. From start to finish buying my Medit was flawless and they were very helpful in offering me information. When I got my scanner I had questions and my phone calls were returned immediately. They knew my name and guided... read moreExtremely good customer service. From start to finish buying my Medit was flawless and they were very helpful in offering me information. When I got my scanner I had questions and my phone calls were returned immediately. They knew my name and guided me through what I would need. Very impressed. Would recommend! read less - 2/02/2020
Home » Cart